razón
f.
(Noun)
"reason;" "correctness"
12th cent. Vulgar Latin ratione. Unexpected voicing from [ts] in Vulgar Latin into [dz] in Old Spanish must have ocurred very anciently: by the 12th cent., the word is already written razón instead of the expected raçón. From Latin rationem, accusative of ratio 'id.,' from ratus "established," the passive participle of reri "to consider." See rata for further etymology.
Indo-European